OK, this is the big one. We still keep using `#include` guards only
where we absolutely need to, but with each header now being valid in
isolation, this can now actually help *minimize* the length of each
translation unit's `#include` list. Turns out that after removing all
the duplicates, we only *actually* need to guard 29 headers across all
5 games.
Part of P0285, funded by [Anonymous] and iruleatgames.
Matching TH04 and TH05 functions, which differentiate between raw
sensing and resetting+sensing. In that light, the previous name for
TH02's function was rather misleading for leaving out that crucial
detail…
Part of P0278, funded by Yanga.
Finishing this push with some semi-maintenance… and yet another `inline`
function replacing a `#define` ASM macro with fully idiomatic C++ code.
Completes P0136, funded by [Anonymous].
nmlgc